Descendancy for Siemowit III, Duke of Masovia: Cook Ancestry

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1320 - 1381 (~ 61 years)

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1 Siemowit III, Duke of Masovia ^[1] b. c .?1320 d. 1381
- Euohemia (Eufemia) d. 1352
  - 2 Eufemia ^[1.1] d. Aft 1418
  - 2 Anna ^[1.2] d. Aft 1403
  - 2 Janusz I ^[1.3] d. 1429
    - Danute Kestutaite d. Yes, date unknown
      - 3 Janusz ^[1.3.1] d. 1422
        
        + Katarzyna of Melsztyn d. Aft 1464
      - 3 Boleslaw III ^[1.3.2] d. 1428
        
        + Anna d. 1458
      - 3 Konrad ^[1.3.3] d. Bef 1429
  - 2 Malgorzata of Mazovia ^[1.4] d. 1409
    - + Casimir IV, Duke of Pomerania d. 1377
  - 2 Siemowit IV ^[1.5] d. 1426
    - + Aleksandra Algirdaite d. 1434
- Ludmila d. Yes, date unknown
  - 2 Two Sons ^[1.6] d. Yes, date unknown
  - 2 Henryk ^[1.7] d. 1392
    - + Ringaile d. 1433